BIL - SJU

$604 Find Cheap Flights from Billings to San Juan - Compare and Save

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Billings to Luis Munoz Marin Intl departing on 9/9. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$604
Delta
Wed 9/9Thu 9/17
BIL - SJU • 2 stops
Top airlines
Cheapest • from $604 (round-trip)
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Billings and Luis Munoz Marin Intl. You'll need at least 1 connection.
Insights
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Insights
Top layover airports
Cheapest • Avg $613 (round-trip)
Shortest trip • 8h 40m (one-way)
Insights
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We hope you love your trip to Luis Munoz Marin Intl!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Billings to Luis Munoz Marin Intl (BIL-SJU)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Billings to Luis Munoz Marin Intl that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Billings to Luis Munoz Marin Intl

Wed, Sep 9 - Thu, Sep 17
Delta Logo
6:20 am - 10:19 pm
BIL
-
SJU
13h 59m
2 stops
Delta Logo
2:59 pm - 11:15 pm
SJU
-
BIL
10h 16m
2 stops
$604Delta
Thu, Sep 10 - Fri, Sep 18
American Airlines Logo
1:13 pm - 11:00 am
BIL
-
SJU
19h 47m
2 stops
American Airlines Logo
6:00 am - 10:10 pm
SJU
-
BIL
18h 10m
2 stops
$642American Airlines
Wed, Sep 9 - Thu, Sep 17
American Airlines Logo
1:13 pm - 1:54 pm
BIL
-
SJU
22h 41m
2 stops
American Airlines Logo
6:00 am - 10:48 pm
SJU
-
BIL
18h 48m
2 stops
$647American Airlines
Mon, Dec 7 - Mon, Dec 14
American Airlines Logo
1:58 pm - 11:59 am
BIL
-
SJU
19h 01m
2 stops
American Airlines Logo
8:30 am - 9:15 pm
SJU
-
BIL
15h 45m
2 stops
$674American Airlines
Wed, Sep 9 - Sat, Sep 19
United Airlines Logo
2:29 pm - 1:45 pm
BIL
-
SJU
21h 16m
2 stops
United Airlines Logo
2:00 pm - 10:53 pm
SJU
-
BIL
10h 53m
1 stop
$675United Airlines
Wed, Sep 9 - Sat, Sep 19
United Airlines Logo
7:00 am - 11:50 pm
BIL
-
SJU
14h 50m
2 stops
United Airlines Logo
2:00 pm - 10:53 pm
SJU
-
BIL
10h 53m
1 stop
$676United Airlines
Thu, Sep 10 - Fri, Sep 18
United Airlines Logo
2:29 pm - 2:44 pm
BIL
-
SJU
22h 15m
2 stops
United Airlines Logo
3:56 pm - 10:47 am
SJU
-
BIL
20h 51m
1 stop
$680United Airlines
Tue, Aug 11 - Tue, Aug 18
American Airlines Logo
12:22 pm - 11:15 pm
BIL
-
SJU
8h 53m
1 stop
American Airlines Logo
7:24 pm - 11:50 am
SJU
-
BIL
18h 26m
2 stops
$694American Airlines
Mon, Dec 7 - Mon, Dec 14
American Airlines Logo
1:58 pm - 5:19 am
BIL
-
SJU
12h 21m
1 stop
American Airlines Logo
7:00 am - 9:15 pm
SJU
-
BIL
17h 15m
1 stop
$706American Airlines
Tue, Aug 11 - Mon, Aug 17
American Airlines Logo
12:22 pm - 11:15 pm
BIL
-
SJU
8h 53m
1 stop
American Airlines Logo
12:55 am - 11:50 am
SJU
-
BIL
12h 55m
1 stop
$714American Airlines
Booking Insights

KAYAK's insights & trends for Billings to Luis Munoz Marin Intl flights

Get data-powered insights and trends into flights from Billings to Luis Munoz Marin Intl to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from Billings to San Juan?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 5 days.

In the past 5 days, the cheapest round-trip tickets from Billings to San Juan were found on Delta ($604) and American Airlines ($642).

Good to know

Cheapest flight$604
Flight from Billings to San Juan

When to book flights from Billings to Luis Munoz Marin Intl

Are your dates flexible? Find out the best times to travel from Billings to Luis Munoz Marin Intl based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Billings to San Juan flights

  • What is the cheapest flight from Billings to San Juan Luis Munoz Marin Intl Airport?

    In the last 5 days, the lowest price for a flight from Billings to San Juan Luis Munoz Marin Intl Airport was $604 for a round-trip ticket.

  • Do I need a passport to fly between Billings and San Juan?

    A passport is required to fly from Billings to San Juan.

  • Which aircraft models fly most regularly from Billings to San Juan?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Billings to San Juan?

    Star Alliance is the only airline alliance operating flights between Billings and San Juan.

  • How does KAYAK find such low prices on flights from Billings to San Juan?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Billings to San Juan.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Billings to San Juan?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Juan from Billings is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Billings to San Juan?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to San Juan with an airline and back to Billings with another airline. Booking your flights between Billings and SJU can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Billings to San Juan?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to San Juan from Billings up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Billings to Luis Munoz Marin Intl

 
See real verified KAYAK customer reviews for airlines flying from Billings to San Juan. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Billings to Luis Munoz Marin Intl? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 9948 reviews
7.1Entertainment
8.1Crew
6.7Food
7.7Boarding
7.3Comfort
Airline reviews

Boarded from a very small gate at LAX. Staff at gate had us line up, then waited 25 minutes to board without a word of explanation. Plane arrived on time then waited 20 minutes for a plane to vacate our gate. Majority of bags arrived after 15 minutes but it took an hour for a small number of remaining bags to be off-loaded despite my “priority” bag tag.

2.0 MediocreMichael, Jul 2026
LAX - IAH
Read more United Airlines reviews

Boarded from a very small gate at LAX. Staff at gate had us line up, then waited 25 minutes to board without a word of explanation. Plane arrived on time then waited 20 minutes for a plane to vacate our gate. Majority of bags arrived after 15 minutes but it took an hour for a small number of remaining bags to be off-loaded despite my “priority” bag tag.

It's fine but Newark to Nashville was too long

The flight was delayed because they closed several flight ways because of air shows, fire works, etc.

Horrible experience. They delayed our flight 7 hours!! We had to seat at the airport with kids on 4th July all day!

No complaints other than luggage carousel was incorrectly guiding passengers to the wrong carousel on the screen.

The flight crew on this leg of my trip was very friendly and pleasant. Every one of them was humorous, as well as helpful and accommodating. This group was BY FAR the best crew I’ve flown with. They deserve kudos.

It was a good flight. Nothing comes to mind about how it could have been better. It was a newer plane, seemed like a great upgrade from your older ones. Staff was very good as well.

My flight was completely full. Making me very stressful with people walking around all the time. I believe airlines can do better for entertain people during the flight.

The United website was easy to use and had all the information I needed. I needed to change my flight and it was accomplished easily on line. I was also easily able to upgrade and for a reasonable price. Boarding went smoothly and the flight was in time. The service was good in board but the crew did not seem happy at all. Limited availability of meals - not much choice for purchase and in business class they ran out of one of the meal choices by row 4. .

The amount of seating is ridiculously small. Three points to consider Point One: Your in flight magazine needs to be smaller. Do you realize I can't even hold it in a reading position because of the limited space in front of me? It's a hangover from the past and if you want anyone to read it, it must be smaller. Point two: It is very uncomfortable for a lady to be sitting next to a strange man and constantly rubbing upper arms even when both of our elbows are within the arm rests. And larger men (whom I pity in this confined predicament) also tend to spread their legs into my leg space which requires me to hold my legs into a smaller position. Point three: The seats seem to position one's body in an unusually upright manner and the head rests push the head farther forward. I gave a small effort to see if the headrest could be removed but didn't want to break it or cause a scene with my efforts. I finally put my jacket behind my back to place my body more forward to match the head rest. The service was fine and I noticed ALL staff worked at smiling and greeting passengers. That was nice. No one likes to fly anymore as it is an endurance rather than a pleasure.

Everything you need to know for your flight from Billings to Luis Munoz Marin Intl

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